package org.example.music_manage_system.interceptors;

import org.example.music_manage_system.utils.JwtUtil;
import org.example.music_manage_system.utils.ThreadLocalUtil;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Map;

@Component
public class LoginInterceptor implements HandlerInterceptor{
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("Authorization");
        try{
            //从redis中获取相同的token
            ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
            String redisToken = operations.get(token);
            if(redisToken==null){
                //token已经失效
                throw new RuntimeException();
            }
            //获取用户信息，存入另一个线程，以便调用用户信息
            Map<String,Object> map = JwtUtil.parseToken(token);
            ThreadLocalUtil.set(map);
            return true;
        }catch (Exception e){
            response.setStatus(401);
            return false;
        }
}
}
